@article{CTGDC_1983__24_1_47_0,
     author = {Keigher, William F.},
     title = {Spectra of differential rings},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     pages = {47--56},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {24},
     number = {1},
     year = {1983},
     mrnumber = {702719},
     zbl = {0544.13017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CTGDC_1983__24_1_47_0/}
}